Like SR Denny mentioned, you have rolled the combo at a 45, for the lav that is wet venting the toilet.

If you had an end of the line cleanout, that would be all he could ask for.
That could be done by rolling a 3" combo, a 3" 45, then a 3" cleanout tee, with a fitting reducer on the top for the lav above and vent above.

But not vented? As long as the inspector allows wet vents, that's what it is.

What you have is perfectly okay, and that is why he approved it. As for "See if He will allow a low heel 90 and vent up into the wall behind the toilet", most inspectors will reject that because material WILL splash into the 2" opening and could clog it.